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Books about Welschenbach:
Cryptography in C and C++ 2nd (second) Edition by Welschenbach, Michael published by Apress (2013) (0010)
By Michael Welschenbach - Cryptography in C and C++: 1st (first) Edition by Michael Welschenbach Michael Welschenbach (Mar 14, 2002)
Wiki information Welschenbach:
Welschenbach is a municipality in the district of Mayen-Koblenz in Rhineland-Palatinate, western Germany.